Fixed file checkpointing tests and added crate tests to CI

[stefan-k]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (64923fc) 90.25% compared to head (414af2a) 90.31%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
argmin/src/core/executor.rs	92.72%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #396      +/-   ##
==========================================
+ Coverage   90.25%   90.31%   +0.06%     
==========================================
  Files         141      141              
  Lines       19869    19916      +47     
==========================================
+ Hits        17933    17988      +55     
+ Misses       1936     1928       -8     

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